1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737e8f821cc7d5d3077b090dc9a5c83eda206ca94c5563f06b8d0effa3e43af4. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08ef1500-ab47-46b1-8403-103ec111d944.json and https://artists.proofprofile.net/proofs/artist/08ef1500-ab47-46b1-8403-103ec111d944.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canto y Suscribo (En Vivo en Auditorio Nacional Adela Reta)
Por No Saber de Amores (En Vivo en Auditorio Nacional Adela Reta)
Se Ha Vuelto Río (En Vivo en Auditorio Nacional Adela Reta)
Canciones de Todavía (En Vivo en Auditorio Nacional Adela Reta)
Antología: Joan Baptista Humet y Rafael Amor (Versión 2024)